2022
DOI: 10.1007/jhep01(2022)016
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Random matrix theory for complexity growth and black hole interiors

Abstract: We study a precise and computationally tractable notion of operator complexity in holographic quantum theories, including the ensemble dual of Jackiw-Teitelboim gravity and two-dimensional holographic conformal field theories. This is a refined, “microcanonical” version of K-complexity that applies to theories with infinite or continuous spectra (including quantum field theories), and in the holographic theories we study exhibits exponential growth for a scrambling time, followed by linear growth until saturat… Show more

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Cited by 57 publications
(46 citation statements)
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References 71 publications
(152 reference statements)
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“…We will leave a more thorough analysis in two-dimensional CFT for future work. It is also worth emphasizing other proposals for the definition of operator complexity [25,26,27,28,29,30] and it would be interesting to compare them in our context. One can potentially use these to diagnose more fine-grained properties of the collision in the interior.…”
Section: Discussionmentioning
confidence: 99%
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“…We will leave a more thorough analysis in two-dimensional CFT for future work. It is also worth emphasizing other proposals for the definition of operator complexity [25,26,27,28,29,30] and it would be interesting to compare them in our context. One can potentially use these to diagnose more fine-grained properties of the collision in the interior.…”
Section: Discussionmentioning
confidence: 99%
“…of operators [18,19,20,21,22,23,24] and their operator complexity [25,26,27,28,29,30]. Some other related recent studies of the black hole interior using ideas of operator reconstruction include [31,32,33,34,35,36,37] and [38,39,40].…”
Section: Introductionmentioning
confidence: 99%
“…If the descent of the Lanczos sequence had a slightly convex profile, the region where the strength of the fluctuations becomes comparable to the mean value on top of which they are added would be pushed towards the right. In fact, the analytical expression for the Lanczos sequence in RMT at large size has this feature [19]: the quasi-linear descent gets eventually modified by a square-root behavior. With this motivation, we use the following Ansatz for the toy Lanczos sequence:…”
Section: Disordered Sequence With Ascent and Quasi-linear Convex Descentmentioning
confidence: 99%
“…It also does not depend on a tolerance parameter as gate complexity does [1], or on a penalty metric as geometric complexity does [11]. Other recent work related to the study of K-complexity includes [17][18][19][20][21][22][23]. In particular, works like [17,19,22,24] have applied it to the realm of holographic conformal field theory.…”
Section: Introductionmentioning
confidence: 99%
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